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0

According to the kinetic theory of matter, which of the following statements is true about matter?
• a.) the atoms and molecules of a substance are always in motion
• b.) the higher the temperature of a substance, the faster it's particles move
• c.) more massive particles move more slowly than less massive particles
• d.) all of the above
• e.) none of the above

d.) all of the above

1

The measure of the average kinetic energy of the particles in an object is called
A. plasma
B. kinetic temperature
C. thermal energy
D. particle energy

C. thermal energy

2

All matter is made of atoms and molecules that are
A. always fixed in position
B. always in motion
C. moving in the same direction
D. moving slowly

B. always in motion

3

The particles can slide past each other, but are still packed together

Liquid

4

The particles have broken down and become ionized

Plasma

5

The particles are in a rigid, fixed structure

Solid

6

The particles are in constant motion and rarely stick together

Gas

7

The process of a solid changing directly into a gas is called

Sublimation

8

According to the law of conservation of mass
A. mass is lost in only physical changes
B. mass is lost in only chemical changes
C. total mass stays the same in changes of state

C. total mass stays the same in changes of state

9

According to the law of conservation of energy
A. energy is not absorbed or released in changes of state
B. energy is not transferred during changes of state
C. energy is not created or destroyed in changes of state
D. a substance has the same energy before and after a change of state

D. a substance has the same energy before and after a change of state

10

When ice melts to form liquid, energy is
A. created
B. destroyed
C. released
D. absorbed

C. released

11

The temperature at which a substance changes from a liquid to a solid is the
A. Freezing point
B. Saturation point
C. Boiling point
D. Condensation point

A. Freezing point

12

The engine of a car left running for a long period of time become hot because
A. energy is created by burning gasoline
B. energy is absorbed by burning gasoline
C. energy is transferred from burning gasoline
D. energy is released as gasoline evaporates

C. Energy is transferred from burning gasoline

13

A substance changes from a liquid to a gas during evaporation because
A. Energy is lost
B. Energy is released
C. Energy is created
D. Energy is absorbed

D. Energy is absorbed

14

What happens to the particles of a substance when it condenses
A. Particles speed up and spread out
B. Particles slow down and clump together
C. Particles stick together and stop moving
D. Particles vibrate as they lose energy

B. Particles slow down and clump together

15

Which of the following is not a fluid
A. Air
B. Water
C. Carbon dioxide
D. Wood

D. Wood

16

The notion that an object floats if the buoyant force on the object is equal to the object's weight was described by
A. Pascal
B. Archimedes
C. Bernoulli
D. Boyle

B. Archimedes

17

The ability of an object to float on a fluid is influenced by the
A. Buoyant force on a fluid
B. Density of the object
C. Density of the fluid
D. All of the above
E. None of the

D. All of the above

18

Pascal's principle states that a contained fluid exerts pressure
A. Equally in all directions
B. Only downwards
C. Only upwards
D. Only upwards and/or downwards

A. Equally in all directions

19

Force divided by area over which the force is exerted is the calculation for
A. viscosity
B. Pressure
C. Density
D. Density

B. Pressure

20

A measure of the resistance to flow of a fluid is
A. Viscosity
B. Mass
C. Density
D. Volume

A. Viscosity

21

The speed at which a fluid flows through a pipe is influenced by the
A. Flow rate of the fluid
B. Viscosity of the fluid
C. Cross-sectional area of the pipe
D. All of the above
E. None of the above

D. All of the above

22

As the pressure of a moving liquid increases, it's speed
A. Decreases
B. Stays the same
C. Increases
D. Varies

A. Decreases

23

Bernoulli's principle describes the property of a(n)
A. Fluid at rest
B. Stays the same
C. Increases
D. Object floating in a fluid

B. Fluid in motion

24

Upward force exerted on an object immersed to floating on a liquid is called
A. Tensile force
B. Buoyant force
C. Fluid pressure
D. Buoyant pressure

B. Buoyant force

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